Improvement in thrashing-machines and grain-separators



J 0 H N S M IT H improvement in Thrashing-Machines and Grain-Separators.

Patented May 16, 1871.

FUTLZ XXXV efimv I 22% 1 AM. PHD/O-LIIHOGHAFHIC co. m (ossams's Macias) incited sate patent @flilirc.

JOHN SMITH, or BURLINGTON, WISCONSIN.

Letters Patent No. 114,984,1iated May 16, 1871.

The Schedule referred to in than Letters Patent and making part of the name.

I, JOHN SMITH, of Burlington, in the county of Ra cine, in the State of Wisconsin, have invented certain Improvements in Thrashing-Maohines and Grain-Separators, of which the following is a specification.

Nature and Object of the Inception. -My invention is for a thrashing-machine with the upper straw-can'ier arranged for the straw to pass nn-- der itand over a wide-meshed screen, so that the grain may fall on screenshelow, which move in opposite direct-ions lengthwise of the machine.

Description of the Drawing forming -Pm't of this Specification. Figure I is a side view of the machine; Figure 2, a plan view of the screens on which the grain falls; and

Figured, perspective view of the screen under the straw-carrier.

f Genera-i Description.

. forward side of the openings, the piece forced out to make the openings hanging down on the under side of the opening.

H, the hanging pieces on screen G. l

I, sieve or screen below the upperscreen G.

K, screen under screen I.

L, pitman to screen-I. M, pitman to screen Ks N, shaft and cranks to which pitmen L and M are attached.

0, board onto which the grain falls, and runs out at hole P.

Q, box in which fall the grain-heads which may not-be thrashed, and is conveyed along to -.the other end, and thence carried to the'thrashing-cylinder G.

.R, the conveyer or elevaton' S, fan;

T, a small door to the fan-case. p

U, another door to the fan-case. These doors are for the purpose of giving directionto the wind.

V, standards raised above the top of screen G, leaning in the direction which the straw passes, for the purpose of separating the straw asthe same passes over or through them to sift out the wheat.

The operation of this machine is:

As thegrain passes through the thrashing-cylin- 'der it falls onto carrier 0, and is carriedalong till it is taken by carrier D and carried down under carrier D and across screen G, where the grain falls through the openings, and the straw is carried on andfalls off over onto carrier E, and carried up over. it out onto the stack; and as the grain and heads no't thrashed fall on'to screen I, and as that isshook by the crank and shaft, the grain. falls through onto screen K, the

straw passing along over it and off over the end onto the straw-carrier E; and as the grain and heads not thrashed fall onto screen K, the grain falls through onto board 0 and out through the opening; the'heads pass over or through the screen and into box Q, and

are carried back to the cylinder by the conveyer or elevator. In this way the grain is well cleaned.

Claim.

' I' clairn as my invention- The combination, in the thrashing-machine and grain-separator herein described, of the cylinder A,

endless straw-carrier O, endless rake D, the screen G, constructed as described and shown, the sieves I K, fan S, and shaft N, provided with cranks L M, all arranged to operate in the manner and for the purpose set forth.

JOHN SMITH. Witnesses:

JACOB GILL, Onmsrmn ERDMANN. 

